	US 12,351,739 B1
	Hot-melt adhesive and method of making same using recycled polymer materials
Jeffrey Mauk, Boonville, IN (US)
Filed by Jeffrey Mauk, Boonville, IN (US)
Filed on Sep. 10, 2024, as Appl. No. 18/829,594.
Int. Cl. C09J 125/06 (2006.01); C09J 11/08 (2006.01); C09J 123/06 (2006.01); C08J 3/20 (2006.01)

CPC C09J 125/06 (2013.01) [C09J 11/08 (2013.01); C09J 123/06 (2013.01); C08J 3/203 (2013.01)]

8 Claims

1. A method of making a hot-melt adhesive comprising the steps of:

a. heating an aromatic hydrocarbon process oil to a desired temperature that is below a boiling point of the process oil;

b. adding a polymer consisting of expanded polystyrene to and dissolving the polymer in the heated process oil, wherein the polymer is added and dissolved until the hot-melt adhesive includes substantially equal parts by weight process oil and polymer;

c. cooling the process oil and polymer mixture to room temperature resulting in a solid-form hot-melt adhesive.

5. A method of making a hot-melt adhesive comprising the steps of:

a. heating a process oil to a desired temperature that is below a boiling point of the process oil;

b. adding expanded polyethylene to and dissolving the expanded polyethylene in the heated process oil, wherein expanded polyethylene is added and dissolved until the hot-melt adhesive includes substantially equal parts by weight process oil and polyethylene;

c. cooling the process oil and polyethylene mixture to room temperature resulting in a solid-form hot-melt adhesive.